SG Heritage Dictionary

Calefactory [Adjective] Webster's Dictionary 1913

Making hot; producing or communicating heat.

Calefactory [Noun] Webster's Dictionary 1913

1. An apartment in a monastery, warmed and used as a sitting room.

2. A hollow sphere of metal, filled with hot water, or a chafing dish, placed on the altar in cold weather for the priest to warm his hands with.